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Search: id:A147064
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| A147064 |
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Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 01010-11111 pattern in any orientation. |
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+0
1
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| 1, 1, 1, 1, 1, 1, 2, 1, 4, 1, 6, 1, 14, 3, 43, 10, 133, 29, 604, 96, 3118, 333, 17061, 1304, 110347, 7679, 888486, 55914
(list; graph; listen)
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OFFSET
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1,7
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EXAMPLE
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Maximal 9 X 9 example
.0.0.0.0.0.0.0.0.0
.0.0.1.1.1.1.1.0.0
.0.1.0.1.0.1.0.1.0
.0.1.1.0.0.0.1.1.0
.0.1.0.0.0.0.0.1.0
.0.1.1.0.0.0.1.1.0
.0.1.0.1.0.1.0.1.0
.0.0.1.1.1.1.1.0.0
.0.0.0.0.0.0.0.0.0
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CROSSREFS
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Sequence in context: A147389 A147008 A147365 this_sequence A147228 A074643 A060794
Adjacent sequences: A147061 A147062 A147063 this_sequence A147065 A147066 A147067
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KEYWORD
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nonn
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AUTHOR
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Ron Hardin (rhhardin(AT)att.net), Nov 04 2008
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